"Disastrous" is an adjective. It is used to describe something that causes great harm, damage, or suffering.
Disastrous has three syllables but, yes, an extra syllable is often added in speech due to the relationship between this word and the word disaster.
The part of speech for this particular word is a noun.
The part of speech that the word my is used as is an adjective.
The part of speech for the word diplomacy is a noun.
H is a letter, not a word. To be a part of speech, it needs to be a word.
The part of speech for the word "boulevard" is a noun.
The part of speech for the word civilian is English grammar.
The word speech is a noun.
The part of speech for this particular word is a noun.
The word speech is a noun.
The word speech is a noun.